clean up of the escape adding string code.
Code to keep cert->trust in sync with nscert->trust in various situations.
Code to allow old version of built-ins to continue to work.
Implement TrustDomain_TraverseCertificates so that PK11_ListCerts will work.
git-svn-id: svn://10.0.0.236/trunk@108596 18797224-902f-48f8-a5cc-f745e15eee43